Airtac PZB Cross Threaded Fitting PZB803-S
SUS304 stainless variant (-S)The AirTAC Airtac PZB Cross Threaded Fitting PZB803-S is a genuine threaded cross for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeThreaded cross
- SeriesPZB
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Temperature-20 to +70 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PZB Cross Threaded Fitting PZB803-S
The PZB803-S is an AirTAC PZB threaded cross in the one-touch fitting family: a single 3/8in PT male thread feeds three Dia 8 tube ports arranged as a cross, letting one air line split into three branches from a single ported point. Connection is genuinely one-touch - push soft nylon or polyurethane tubing straight into each port until it bottoms out, and the internal chuck grips the tube wall; press the POM release ring and the tube pulls free for rework or re-routing.
This resin-line fitting carries a working pressure of 0-1.0 MPa (0-10 kgf/cm2), a vacuum rating of -750 mmHg (10 Torr), a proof pressure of 1.5 MPa and a temperature window of -20 to +70 C. The -S suffix adds a SUS304 stainless stud on the threaded end; the cross body itself stays glass-filled PBT with the standard grey finish, and the external dimensions are identical to the plain PZB803. The thread arrives pre-coated with sealant so it seals on the PT taper without extra tape.
Airtac PZB Cross Threaded Fitting PZB803-S Technical Specifications
| Model | Airtac PZB Cross Threaded Fitting PZB803-S |
|---|---|
| Type | Threaded cross |
| Series | PZB |
| Connection | Push-in one-touch |
| Body material | Stainless steel 304 (-S variant) |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. Stainless (-S): SUS304 in place of brass - a solid SUS304 body on the PC and POC straight connectors, and a PBT body with a SUS304 stud on the elbow, tee and branch shapes. Working pressure, proof pressure and temperature are unchanged from the standard version. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac PZB Cross Threaded Fitting PZB803-S
| PZB | Threaded cross. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| D | Black. Blank = grey. |
| -S | Stainless-steel body. |
Fitting & Sealing Notes
- check Cut the tube square and clean before pushing it home, or the seal will leak.
- check Push until it stops, then pull back to check the chuck has gripped.
- check To release, press the collet ring fully in and pull the tube out.
- check Threaded parts arrive with sealant on the thread; M5 sizes use a sealing gasket.
- check Match the tube OD exactly - a 6 mm fitting will not hold 1/4" tube.
Where the Airtac PZB Cross Threaded Fitting PZB803-S Is Used
Multi-station carousel machines
A rotary indexing table with four per-station clamps can take one 3/8in PT drop off the centre manifold and branch it three ways through the PZB803-S, one Dia 8 run per station clamp, eliminating a junction box of separate tees.
Control-panel-mounted air distribution
Mounted near the pneumatic panel of a packaging machine, the cross splits a regulated supply into three Dia 8 legs feeding vacuum ejectors, air knives and a cylinder group, all from one threaded inlet.
Corrosive fume laboratory rigs
On pilot-scale chemical or plating benches where airborne fumes attack plated brass hardware, the SUS304 stud on the threaded entry resists surface corrosion at the point where the fitting meets the frame-mounted port.
Is the Airtac PZB Cross Threaded Fitting PZB803-S the Right Part?
On the 3/8in PT ladder for the PZB cross, the step down is Dia 6 (PZB603) and the step up is Dia 10 (PZB1003). Moving to Dia 6 lowers the bore for lighter-flow branches such as sensor or pilot lines, while Dia 10 feeds hungrier actuators; flow capacity tracks the tube bore, since AirTAC publishes these fittings as characteristic curves rather than fixed flow numbers. If the port on your manifold is 1/4in PT instead, PZB802 keeps the same Dia 8 bore on the smaller thread.
Two ladder quirks worth knowing: the PZB cross has never been offered in M5 or in Dia 4, and on the 1/8in thread Dia 8 is the largest tube available - so a Dia 8 cross on anything bigger than 3/8in PT does not exist. Whichever you pick, the tube OD must match exactly: a Dia 8 port will not seal or hold a nominal 5/16in or 1/4in tube.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
Airtac PZB Cross Threaded Fitting PZB803-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. The fitting joins Dia 8 soft nylon or polyurethane tubing on three ports and screws into a 3/8in PT female thread. The -S stud is SUS304 stainless; every pressure and temperature figure is identical to the standard grey PZB803.
No. On the PZB family the -S suffix specifies a SUS304 stainless stud on the male thread only - the cross body remains PBT with the standard internal chuck, guide and NBR sealing arrangement, and the outside dimensions match the non-stainless part exactly. Buyers needing it typically mount the fitting where the stud threads into a damp or corrosive environment while the tube ports sit in a protected zone. AirTAC publishes no corrosion class or certification for this variant, so treat it as a material upgrade, not a rated wash-down spec.
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